Installation of Steam and HL2 worked fine, but when it came time to launch the game Steam said "Preparing to launch Half-Life 2" but did nothing. Perhaps this is currently not supported by this version of Parallels (v3.0, Build 4560), or is there a good solution to this problem? Please respond ASAP, as I have been looking forward to playing HL2 and Gmod on my Mac. (NOTE: I don't want to go through the tedious process of installing Boot Camp just to play HL2.)